TW201435035A - Protective films or papers for glass surfaces and methods thereof - Google Patents

Abstract

A protective paper or film and a method of protecting a glass substrate by applying the protective paper or film having a slip agent composition onto a surface of a glass substrate. The slip agent composition comprises at least one fatty alcohol as defined herein.

Description

Protective film or protective paper for glass surface and method thereof [Cross-Reference to Related Applications]

The present application claims priority to U.S. Application Serial No. 13/687,204, filed on Nov. 28, 2012, the content of which is hereby incorporated by reference.

Embodiments described herein generally relate to protecting glass article surfaces during trimming and packaging, and more particularly with protective films or protective papers that are provided during conditioning, packaging, and/or transport of glass articles. Glass surface protection.

Liquid crystal displays (LCDs), organic light emitting displays (OLEDs), and other optoelectronic displays typically require the use of glass substrates having at least one surface that is substantially free of scratches and other defects. For example, LCD displays and photovoltaic glass typically require a glass substrate having a pristine surface that is substantially free of inorganic particles and scratches (ie, defects). Unfortunately, the production of such glass substrates typically requires multiple steps, such as surface scribing, glass splitting, edge grinding, and Polishing, each step may generate a large number of glass particles, which can move at a certain speed, thereby impacting the mass area of the glass surface. The flying particles can scratch the surface of the glass, which can leave permanent damage, or the flying particles adhere to the glass surface with a strong enough bond that will withstand subsequent washing and cleaning steps. The residual glass particles on the surface of the glass can cause defects in the coating and/or semiconductor device, such as a transistor, which are deposited on the glass in a downstream process.

In addition, the glass substrate can be transported from the substrate manufacturing factory to different The substrate user at the location. A plurality of glass sheets can be packaged into a container while transporting the glass substrate from one location to another. Although the glass container can be sealed, particles and other contaminants can still contact the quality surface area of the sheet, which can cause undesirable surface damage.

Conventional methods for protecting the surface of glass articles include the use of paper, Plastic films, coatings (such as polysaccharides), surfactants, and the like. Some specific methods of glass surface protection include, for example, the use of polymeric films or polymeric papers formulated with fatty amides such as erucamide. However, these methods have various drawbacks. The polymeric film or polymeric paper can leave an organic residue after the paper or film is removed from the glass surface. These residues are migratory organic compounds (mostly derived from fatty guanamine) which can be difficult to remove by washing. The residual fatty guanamine present on the surface of the glass after washing can cause a mura effect, and in some cases, the residual fatty guanamine causes or enhances the formation of stains on the surface of the glass.

Therefore, the disclosure herein discloses protection during trimming, packaging, and transportation. An alternative to the surface of a glass article.

In an embodiment, a method of protecting a glass substrate is disclosed. Method package The method comprises the steps of: contacting a protective film or a protective paper with at least one surface of a glass substrate, wherein the protective film or protective paper comprises a slip agent composition comprising at least one fatty alcohol having the formula R-OH Wherein R is a saturated or unsaturated, linear or branched aliphatic chain containing from 12 to 30 carbon atoms.

In an embodiment, a method for temporarily protecting a glass substrate is disclosed law. The method comprises the steps of contacting a protective film or protective paper with at least one surface of a glass substrate, the protective film or protective paper having a slip agent composition comprising at least one fat having the formula R-OH An alcohol, wherein R is a saturated or unsaturated, linear or branched aliphatic chain having from 12 to 30 carbon atoms; a portion of the slip agent composition is transferred from the protective film or protective paper to the surface of the glass substrate; The protective film or protective paper is removed from the surface of the glass substrate such that a certain amount of the slip agent composition remains on the surface of the glass substrate.

In an embodiment, a composite glass package is disclosed. Composite glass The package comprises a glass substrate and a protective paper or a protective film adhered to the surface of the glass substrate, wherein the protective paper or protective film comprises a slip agent composition, the slip agent composition comprising at least one type of A fatty alcohol of R-OH wherein R is a saturated or unsaturated, linear or branched aliphatic chain having from 12 to 30 carbon atoms.

In an embodiment, a method of forming a coating on a substrate is disclosed. The method comprises the steps of: heating the slip agent composition to a temperature sufficient to partially evaporate one of the at least one fatty alcohol to form a cold a vapor of a condensation temperature, wherein the slip agent composition comprises at least one fatty alcohol having the formula R-OH, wherein R is a saturated or unsaturated, linear or branched aliphatic chain having from 12 to 30 carbon atoms; At least a portion of the surface of the substrate is exposed to the vapor, wherein the surface of the substrate has a temperature below the condensation temperature of the vapor such that the vapor condenses on the surface of the substrate to form a coating.

In an embodiment, a method of making a protective polymer film is disclosed law. The method comprises the steps of combining a slip agent composition with a protective polymeric film, wherein the slip agent composition comprises at least one fatty alcohol having the formula R-OH, wherein R is from 12 to 30 carbon atoms A saturated or unsaturated, linear or branched aliphatic chain.

In an embodiment, a method for packaging a glass substrate is disclosed. The method comprises the steps of: placing a protective paper or protective film between a first glass substrate and a second glass substrate, the protective paper or protective film being formulated with a slip agent composition, wherein the slip agent composition comprises At least one fatty alcohol having the formula R-OH, wherein R is a saturated or unsaturated, linear or branched aliphatic chain having from 12 to 30 carbon atoms; forming a stack in which at least a protective paper or protective film is disposed Part and contacting the first glass substrate with the second glass substrate; and placing the stack in the container.

a glass protective polymeric film or polymeric paper as described herein, Other features and advantages of the embodiments of the methods and uses will be set forth in the description which follows, and in which <RTIgt; It is recognized by the method, the scope of patent application and the accompanying drawings.

The foregoing general description and the following embodiments describe various embodiments. It is intended to provide an overview or framework for understanding the nature and characteristics of the claimed subject matter. The accompanying drawings are included to provide a further understanding of the various embodiments The drawings illustrate the various embodiments described herein and, together with the description

100‧‧‧ Vapor deposition process

105‧‧‧Fatty alcohol/slip agent composition

110‧‧‧paper substrate/paper or polymer substrate/substrate

115‧‧‧ Container

120‧‧‧Vapor

125‧‧‧roll

130‧‧‧roll

200‧‧‧cast film process

205‧‧‧film layer or mesh/film

210‧‧‧Mold entry

215‧‧‧ cast film mold

220‧‧‧Cooling casting rolls/casting rolls

225‧‧‧Leaving roller

230‧‧‧ idling roller

235‧‧‧Edge trimming machine

240‧‧‧ Pulling roller

245‧‧‧Winding roller

300‧‧‧Polymer sheet extrusion process

305‧‧‧Polymerized film layer or mesh/film

310‧‧‧Mold entry

315‧‧‧Mold

320‧‧‧Three-roller finisher

325‧‧‧Support roller

330‧‧‧Edge trimming and cutting machine

335‧‧‧ Pulling roller

340‧‧‧Saw or big scissors

400‧‧‧Squeeze casting process on substrate

405‧‧‧paper or polymer substrate/substrate

410‧‧‧pressure roller

415‧‧‧Mold

420‧‧‧Cooling roller

425‧‧‧Leaving roller

430‧‧‧Edge trimmer

435‧‧‧Winding roller

500‧‧‧Blowing film extrusion process

505‧‧‧film layer or net

510‧‧‧Mold entry

515‧‧‧Blowing film mould

520‧‧‧Plastic tube or bubble/plastic tube/flattened tube

525‧‧‧Air inlet

530‧‧‧External air ring

535‧‧‧ Guide roller

540‧‧‧ flattening frame

545‧‧‧ Pulling roller

550‧‧‧Winding roller

In an embodiment: Figure 1 schematically depicts a method of forming a fatty alcohol coating on a paper substrate by vapor deposition; Figure 2 schematically depicts a cast film extrusion by cast film extrusion a method of forming a polymeric film formulated with a fatty alcohol; FIG. 3 schematically depicts a method of forming a polymeric film formulated with a fatty alcohol by extrusion of plastic; FIG. 4 schematically depicts a method by using a substrate a method of extrusion casting to form a polymeric film formulated with a fatty alcohol; and FIG. 5 schematically depicts a blown film extrusion method for forming a polymeric film formulated with a fatty alcohol; FIG. 6 is graphically depicted and coated The number of defects of the bare glass in contact with the fatty alcohol paper before and after scratching; Figure 7 graphically depicts the number of defects before and after scratching of the coated glass in contact with the paper coated with fatty alcohol; Figure 8 depicts an adhesion diagram as measured by atomic force microscopy (AFM) and a histogram of the surface area of the glass sheet after one hour of contact with the paper coated with fatty alcohol; Figure 9 depicts an adhesion diagram as measured by atomic force microscopy (AFM) and a histogram of the surface area of the glass sheet after seventeen hours of contact with the paper coated with fatty alcohol; Figure 10 graphically depicts The distribution of the adhesion of the glass sheet coated by paper transfer by atomic force microscopy (AFM); Figure 11 graphically depicts the coating form of the fatty alcohol applied directly to the glass substrate; and 12th The figure graphically depicts the coating morphology of the fatty alcohol transferred to the glass substrate.

Reference will now be made in detail to embodiments of protective films or protective papers formulated with fatty alcohols, methods of making such protective or protective papers, and methods of using such protective or protective papers to protect glass articles, examples of which are illustrated In the accompanying drawings. Wherever possible, the same element symbols are used throughout the drawings to refer to the same or. Disclosed herein is a method of formulating a substrate with a slip agent composition.

In an embodiment, a coating is formed on a paper or polymer substrate. The method generally comprises the steps of providing a slip agent composition comprising at least one fatty alcohol; heating the slip agent composition to a temperature sufficient to partially evaporate one of the at least one fatty alcohol to form a condensation a vapor of temperature; and exposing at least a portion of the surface of the paper or polymer substrate to the vapor, wherein the surface of the paper or polymer substrate has a temperature below the condensation temperature of the vapor such that the vapor is in the paper or polymer Condensation on the surface of the substrate, A coating is formed.

In an embodiment, the polymer substrate is impregnated with a slip agent composition. The The method generally comprises the steps of: providing a slip agent composition comprising at least one fatty alcohol; blending the slip agent composition with at least one polymer to form a molten polymer mixture; and forming the polymer mixture into a polymer membrane. In an embodiment, the at least one polymer is a molten polymer blended with the slip agent composition. In embodiments, the polymer mixture may also be a polymer that melts during subsequent processing steps. The polymeric film can be formed by typical commercial processes including, for example, cast film and blown film processes, which are shown and described in greater detail herein.

The paper substrate described herein can be formed from a variety of papers, for example, The paper may be formed of cellophane, kraft paper, parchment paper, recycled paper, cellulose paper, or the like. In an embodiment, the paper substrate can be in the form of a sheet or a continuous web. The web can be newly formed or a preformed web.

Examples of suitable polymers that can be used in polymer substrates include glass a polymer having low adhesion, such as polyolefin, low density polyethylene, polyethylene film, ethylene-acrylic acid (EAA) copolymer, ethylene vinyl acetate (EVA) copolymer, nylon polymer, Polyethylene terephthalate polymer, polyvinyl chloride polymer or polypropylene, and combinations thereof. In an embodiment, the polymer is a low density polyethylene or a Visqueen® film. The polymeric substrate can be in the form of a sheet or continuous web which can be formed in any conventional manner, such as by extrusion.

The slip agent composition comprises at least one fatty alcohol. The terms "long-chain fatty alcohol" and "fatty alcohol" are used interchangeably herein. In the examples, fat The fatty alcohol may be present in the slip agent composition in an amount greater than about 75%, 85%, 90%, 95% or 99% by weight, based on the total weight of the slip agent composition. In embodiments, the fatty alcohol may be from about 50% to about 99%, from about 50% to about 95%, from about 50% to about 90%, by weight, based on the total weight of the slip agent composition. The amount of wt% to about 85% by weight or from about 50% by weight to about 75% by weight is present in the slip agent composition.

A fatty alcohol is a hydrocarbon chain having 12 to 30 carbon atoms and has a compound of at least one hydroxyl group. In embodiments, the hydrocarbon chain can have from 12 to 26 carbon atoms, from 16 to 24 carbon atoms, or from 18 to 22 carbon atoms. In an embodiment, the fatty alcohol may have 1, 2, 3 or 4 hydroxyl groups attached to the hydrocarbon chain. In embodiments, the fatty alcohol may have one, two, and/or tertiary hydroxyl groups attached to the hydrocarbon chain.

Fatty alcohol corresponds to the chemical formula: R-OH

Wherein R is a saturated or unsaturated, straight or branched aliphatic chain containing from 12 to 30 carbon atoms, from 12 to 26 carbon atoms, from 16 to 24 carbon atoms or from 18 to 22 carbon atoms. If R is unsaturated, R can have one or more points of unsaturation. In embodiments, the length of the R group is at least about 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30 Carbon. A branch can have one or more branch points along the aliphatic chain. Further, the branches may include annular branches.

In an embodiment, the fatty alcohol may be a linear saturated fatty alcohol comprising from 12 to 30 carbon atoms, from 12 to 26 carbon atoms, from 16 to 24 carbon atoms, or from 18 to 22 carbon atoms. The fatty alcohol corresponds to the following chemical formula: CH ₃ -(CH ₂ ) _n -CH ₂ OH

Wherein n is an integer of, for example, 10 to 24 or 14 to 20. In an embodiment, the fatty alcohol may be selected from branched fatty alcohols having from 13 to 30 carbon atoms.

Non-limiting examples of suitable fatty alcohols include lauryl alcohol, tridecane Alcohol, tetradecanol, pentadecyl alcohol, cetyl alcohol, palmitolol, heptadecyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, linoleyl alcohol, eicosyl alcohol, twenty-two Alkanol, erucic acid sterol and/or combinations thereof. In an embodiment, the fatty alcohol comprises or is selected from the group consisting of stearyl alcohol, behenyl alcohol, and/or combinations thereof. In an embodiment, the fatty alcohol comprises or is selected from the group consisting of: stearyl alcohol.

In an embodiment, the fatty alcohol comprises 18 carbon atoms. Salt letter contains Fatty alcohols of 18 carbon atoms may be particularly suitable due to their melting point, flash point, stability in air, ability to form the desired coating pattern on the glass surface, mobility and cost. Examples of fatty alcohols having 18 carbon atoms include, but are not limited to, aliphatic alcohols such as stearyl alcohol, isostearyl alcohol, oleyl alcohol, oleyl alcohol, linoleyl alcohol, oleyl linoleyl alcohol, linoleyl alcohol, anti Oil based linolenic alcohol, castor oil alcohol and/or combinations thereof.

Not bound by theory, the letter is meaningful to give the glass surface protection For fatty alcohols, the number of carbon atoms should be at least 12. This is because short-chain fatty alcohols (ie, fatty alcohols having less than 12 carbon atoms) can have relatively high volatility around room temperature and during glass conditioning and handling temperatures, thereby reducing their surface protection. Effectiveness. In addition, short chain fatty alcohols can be unstable in air under coating conditioning conditions and/or glass surface conditioning conditions that cause less than the desired surface protection. However, the use of fatty alcohols containing more than 40 carbon atoms can be too high during glass substrate conditioning/disposal conditions. The melting point and/or the partial pressure of too low make it extremely difficult to use. Furthermore, the use of fatty alcohols having more than 40 carbon atoms tends to leave an organic residue that is not easily removed on the glass surface.

The same hydrophilic group of fatty alcohol and the sheet material to be protected The hydrophilic groups on the surface form a strong bond. For example, if the sheet material has an oxide glass surface comprising surface-OH groups, the surface-OH group can form a hydrogen bond with the -OH group of the fatty alcohol, as schematically illustrated below: Surface-O - Carbon chain.

Molecules of fatty alcohols may also bond to the surface of the sheet via the formation of covalent bonds, van der Waals forces or other mechanisms.

The slip agent composition may optionally comprise an additive, which may include, for example, an organic solvent, water, ethanol, acetone or a mixture thereof. In some examples, the additive is present in an amount less than about 25%, 20%, 15%, 10%, 5%, 3%, or 1% by weight, based on the total weight of the slip agent composition. In other examples, the additive is from about 0.01% to about 25% by weight, from about 0.01% to about 20% by weight, from about 0.01% to about 15% by weight, about 0.01% by weight, based on the total weight of the slip agent composition. It is present in an amount of from about 10% by weight, from about 0.01% to about 5% by weight, from about 0.01% to about 3% by weight, or from about 0.01% to about 1% by weight.

To deposit a fatty alcohol layer onto a paper or polymer substrate, the paper or polymer substrate can be maintained at a temperature below the melting point of the fatty alcohol. If the temperature of the paper or polymer substrate is too high, the fatty alcohol can be easily oxidized or have too high a vapor pressure, causing an insufficient or uneven coating of the fatty alcohol on the paper or polymer substrate. In addition, inadequate or uneven coatings may not have the desired level of adhesion, Friction coefficient and hydrophobicity.

In an embodiment, the slip agent composition is heated to between about 75 ° C and about A temperature of 125 ° C promotes the deposition of fatty alcohols on the substrate. In an embodiment, the slip agent composition is heated to a temperature of from about 80 °C to about 115 °C. In an embodiment, the slip agent composition is heated to a temperature of from about 85 °C to about 110 °C. In an embodiment, the slip agent composition is heated to a temperature greater than about 80 ° C to promote deposition of fatty alcohols on the substrate.

Exposing the paper or polymer substrate to vapor for a sufficient amount of paper or poly The period of time during which the coating is formed on the substrate. In an embodiment, the paper or polymer substrate is exposed to vapor for a period of from about 30 seconds to about 10 minutes. In an embodiment, the paper or polymer substrate is exposed to vapor for a period of from about 1 minute to about 10 minutes. In an embodiment, the paper or polymer substrate is exposed to vapor for a period of from about 1 minute to about 5 minutes.

The amount of fatty alcohol condensed or deposited onto the polymer or paper substrate can be A variety of factors are determined, such as, for example, the temperature of the vapor, the temperature of the polymer film or polymer paper, the flow rate of the vapor, and the period of time during which the polymer film or polymer paper is exposed to the vapor. Since the amount of coating material that needs to be deposited onto a polymer film or polymer paper to provide sufficient glass surface protection is small, the coating process can be completed in a shorter period of time. This is especially true for high throughput continuous processes. In embodiments, the amount of fatty alcohol condensed or deposited onto the polymeric film or polymeric paper can be at least about 200 nanograms per square centimeter, at least about 400 nanograms per square centimeter, or at least about 600 nanograms per square centimeter. In embodiments, the amount of fatty alcohol condensed or deposited onto the polymeric film or polymeric paper can be, for example, from about 200 to about 2500 ng/cm 2 , from about 400 to about 2000 ng/cm 2 and Approximately 600 to about 1500 Ng/cm 2 , including intermediate values and boundaries.

Referring to Figure 1, a schematic depiction of deposition on a paper substrate (110) is depicted. A vapor deposition process (100) of a fatty alcohol (105) coating. A slip agent composition (105) comprising at least one fatty alcohol is provided to the container (115). The slip agent composition (105) can be provided in liquid, wax or other solid form. As used herein, the term "wax" refers to a compound that is predominantly solid at room temperature and standard pressure (25 ° C and 760 mm Hg) and has a solid/liquid reversible state change at elevated temperatures and/or pressures. The slip agent composition (105) is heated in a vessel (115) to a temperature sufficient to evaporate at least a portion of the at least one fatty alcohol to form a vapor (120) having a condensation temperature. The paper or polymer substrate (110) is fed into a container (115) via a roller (125) containing a slip agent composition (105) comprising a fatty alcohol to thereby cause the substrate (110) Exposure to vapor (120). The vapor (120) is condensed and deposited on the substrate (110) to form a coating. The coated paper substrate is then transferred using a roll (130) for subsequent processing, which may include heating, drying, pressing, further coating, calendering, and the like. The container of Figure 1 can be adapted to apply a slip agent composition to one or both sides of the sheet. In addition, the container can be enclosed or exposed to ambient air.

Referring to Figure 2, a schematic depiction of a method for fabricating a polymer film Cast film process (200). In this method, at least one polymer and a slip agent composition comprising at least one fatty alcohol are combined together (e.g., by mixing) to form a molten polymer mixture. The molten polymer mixture is introduced into a cast film mold (215) via a mold inlet (210) where the polymer mixture is extruded to form a film layer or web (205). Casting film (205) to cold The casting roll (220) is then passed over and the guiding film is passed through a take-off roll (225) which is used to remove or peel the film from the casting roll (220). The guiding film (205) then surrounds the idler roll (230) and passes through an edge trimming stripper (235) for trimming the edge portions of the film (205) on each side. However, in the embodiment shown and described herein, the edge trimming stripper (235) can trim out the edge portion from only one side of the film (205). The film (205) is then pushed through the pulling roll (240). The film (205) is then pushed to the take-up roll (245) and wound onto the take-up roll.

Referring to Figure 3, a schematic depiction of a method for fabricating a polymer film The polymer sheet extrusion process (300). The at least one polymer is combined with a slip agent composition comprising at least one fatty alcohol (eg, by mixing) to form a molten polymer mixture. The molten polymer mixture is introduced into a mold (315) via a mold inlet (310) where the polymer mixture is extruded to form a polymer film layer or web (305). The film (305) was pulled through a three-roll finisher (320) using two pulling rolls (335) and passed through four support rolls (325). An edge trim cutter (330) is placed over one of the support rollers (325) to trim the edge portions of the film (305) on each side. However, in the embodiments shown and described herein, the edge trim cutter (330) can trim off the edge portion from only one side of the film (305). The film (305) is then passed through a saw or large scissors (340) which can be used to cut or divide the film (305) to cut the film (305) into a sheet.

Referring to Figure 4, the base for fabricating a polymer film is schematically depicted. Plate extrusion casting process (400). Combining at least one polymer with a slip agent composition comprising at least one fatty alcohol (eg, by mixing) to form A molten polymer mixture. The pre-formed paper or polymer substrate (405) is unwound and the pre-formed paper or polymer substrate is guided through a pressure roll (410) where a molten polymer mixture is introduced via a die (415) and melt-polymerized The mixture of materials is applied to a substrate (405). The chill roll (420) contacts the coated substrate (405) where the coated substrate (405) is cooled. The guide substrate (405) is passed through a take-off roll (425) for removing or stripping the coated substrate from the chill roll (420). The edge trimmer (430) is placed behind the take-up roll (425) to trim the edge portion of the substrate (405). However, in the embodiments shown and described herein, the edge trimmer (430) can trim out the edge portion from only one side of the substrate (405). The substrate (405) can then be wound onto a take-up roll (435).

Referring to Figure 5, a schematic depiction of the blowing of a polymer film is depicted. Film extrusion process (500). The at least one polymer is combined with a slip agent composition comprising at least one fatty alcohol (eg, by mixing) to form a molten polymer mixture. The molten polymer mixture is introduced into a blown film mold (515) via a die inlet (510) where the polymer mixture is extruded to form a film layer or web (505). The polymer mixture is blown into the plastic tube or bubble (520) via an air inlet (525) and a stream of air is supplied to the interior of the plastic tube (520). A valve (not depicted) is used to control the flow rate of air entering the plastic tube (520). Air is also directed from the outside of the plastic tube (520) from the outer air ring (530). When the plastic tube (520) is pulled up through the flattening frame (540) using a pulling roller (545), the guide roller (535) protects and guides the plastic tube. The flattening frame (540) is configured to accept the extruded film tube and to flatten and flatten the extruded film tube. The flattened tube (520) passes through the pulling roller (545) And wound onto the take-up roll (550).

The protective polymeric films or polymeric papers described herein can be used to protect the surface of substrates, such as the surfaces of organic and inorganic substrates. In embodiments, the protective polymeric films or polymeric papers described herein can be used to protect hydrophilic surfaces, such as those surfaces comprising hydrophilic surface groups (eg, OH groups). A variety of glass, glass-ceramic, ceramic, and crystalline materials are known to comprise surface-OH groups and thus can be protected with the protective polymeric films or polymeric papers described herein. In embodiments, the protective polymeric film or polymeric paper described herein can be used to protect the surface of a glass substrate.

In general, a method for protecting a glass substrate can include providing a protective paper or protective film formulated with a slip agent composition comprising at least one fatty alcohol as described herein, and applying the protective paper or protective film to On the surface of the glass substrate. A composite glass package having a protected surface may comprise a glass substrate and a protective paper or protective film adhered to the surface of the glass substrate, wherein the protective paper or protective film is provided with a slip agent comprising at least one fatty alcohol as described herein Composition formulation.

In an embodiment, the glass substrate may first be a bare, such that the glass substrate is substantially free of paint. In an embodiment, a coating may be formed on the glass substrate. The coating can be a fatty alcohol coating applied directly to the clean surface of the glass substrate. The fatty alcohol coating can be applied using any conventional means, such as by spraying, dip coating, flow coating, and the like. In embodiments, the coating may be deposited during and/or prior to the glass substrate conditioning/disposal process to assist in protecting the surface quality of the glass during such processing.

The method may further comprise partially protecting the one of the slip agent composition The paper or protective film is transferred to the surface of the glass substrate, and the protective paper or protective film is removed from the surface of the glass substrate such that a certain amount of the slip agent composition remains on the surface of the glass substrate.

Transfer of a portion of the slip agent composition to the surface of the glass substrate is desirable Depending on the amount of pressure applied to the protective paper or the protective film, for example, when the protective paper or protective film is in contact with the glass substrate, the amount of time for the protective paper or protective film containing the slip agent composition to contact the surface of the glass substrate, and whether Heating is used to assist in transferring the slip agent composition to the glass substrate. In embodiments, the coating weight of the slip agent composition transferred to the surface of the glass substrate can vary, and in embodiments, can be, for example, from about 10 to about 1600 Ng/cm 2 , from about 10 to about 1000 Ng/ Square centimeters, from about 20 to about 750 ng/cm 2 , from about 25 to about 500 ng/cm 2 and from about 50 to about 300 ng/cm 2 , including intermediate values and boundaries. If the coating weight is too high, for example greater than 5000 Ng/cm 2 , the slip agent composition may be difficult to remove during subsequent cleaning and washing steps. If the coating weight is too low, for example less than 10 Ng/cm 2 , the slip agent composition may not be sufficient to provide the desired defect protection and scratch resistance.

The slip agent composition transferred to the surface of the glass substrate has a certain adhesive strength sufficient for the slip agent composition to adhere to the surface of the glass substrate as a protective layer capable of withstanding subsequent glass manufacturing processes such as glass finishing and disposal processes. At the same time, it is easy to remove from the surface of the glass substrate when needed. Without being bound by theory, Xianxin is based on the acid-base interaction of decylamine and alcohol on the surface of cerium oxide glass achieved by the Fowkes & Drago method, and it is expected that the surface of guanamine and cerium oxide glass The interaction energy (about 157 mJ/m ² ) is greater than the interaction energy between the alcohol and the ceria glass surface (using a ketone value of about 87 mJ/m ² ). Therefore, the salty fatty amide has a high adhesion to the glass substrate, making it difficult to remove from the glass surface, and the fatty alcohol has a lower adhesion, making it easier to remove from the glass surface.

The method described herein can further comprise applying the slip agent composition to The surface of the glass is removed. It should be noted that the removal of the coating can be performed by the glass manufacturer, or the glass can be shipped to an end user (such as a manufacturer of a liquid crystal display device or the like) and the user can remove the coating from the glass. In an embodiment, the glass substrate is washed and cleaned to remove fatty alcohol, any residual glass particles, and other surface contaminants from the surface of the glass substrate. Washing can be carried out using conventional commercial detergents suitable for cleaning glass surfaces. In embodiments, a slip agent composition of from about 0.1 to about 8 ng/cm 2 , from about 0.5 to about 8 ng/cm 2 and from about 1 to about 5 ng/cm 2 (including intermediate values and boundaries) It can remain on the surface of the glass substrate after washing. In embodiments, a slip agent composition of less than about 8, 6, 5, 4, 3, 2 or 1 neg/cm 2 may remain on the surface of the glass substrate after washing. Thus, coatings containing the fatty alcohols described herein can be easily removed from the glass substrate by washing.

Removal of the slip agent composition can be performed before, during, and/or after various glass making operations, such as trimming operations, handling operations, packaging and shipping operations, or the like. In an embodiment, such as the treatment of an LCD glass substrate, the removal of the slip agent composition by washing is performed after the trimming operation.

Once the slip agent composition is removed, the glass substrate exhibits a lower number of defects. Defects may include, but are not limited to, scratches on the surface of the glass and/or particles or debris present on the surface of the glass. Without being bound by theory, it is believed that the fatty alcohols described herein reduce the coefficient of friction between the particles and the surface of the glass, thereby protecting the glass surface from being scratched by the particles. It is also believed that the fatty alcohols described herein reduce the adhesion between the particles and the surface of the glass, thereby reducing the number of particles that can adhere to the surface of the glass with sufficient bond strength to withstand subsequent washing and cleaning. Thus, in an embodiment, the glass has a defect number of less than about 30 defects per square centimeter when the slip agent composition is removed. In an embodiment, the glass has a defect number of less than about 25 defects per square centimeter when the slip agent composition is removed. In an embodiment, the glass has a defect number of less than about 20 defects per square centimeter when the slip agent composition is removed. In an embodiment, the glass has a defect number of less than about 10 defects per square centimeter when the slip agent composition is removed. In an embodiment, the glass has a defect number of less than about 5 defects per square centimeter when the slip agent composition is removed. In embodiments, when the slip agent composition is removed, the glass may also have a number of scratch defects/square centimeters prior to scratching and a number of scratch defects/square centimeters after performing a scratch test as further described herein. The percentage change in the number of defects between, the percentage change of the number of defects is from about 0% to about 85%, from about 0.5% to about 50%, and from about 1% to about 33%. The percentage change is calculated as follows:

A low percentage change can indicate that the slip agent composition provides substantially the same surface characteristics and defect levels to the glass surfaces of the control untreated sheets held in a clean environment.

The surface protective polymer film and polymer paper disclosed herein are packaged. It is especially suitable for a glass substrate. The glass substrate can be packaged by: providing a first glass substrate and a second glass substrate; and blending with the slip agent composition A protective paper or protective film is disposed between the first glass substrate and the second glass substrate, wherein the slip agent composition comprises at least one fatty alcohol as described herein; forming a stack with a protective paper or protective film disposed therebetween At least a portion, and contacting the first glass substrate with the second glass substrate; and placing the stack in the container.

Protective paper or protective film can be adhered or not adhered to the first and / or second glass substrate. In an embodiment, the protective paper or protective film may be loosely or strongly adhered to one or both of the first and second glass substrates in the stack. Adhesion can be achieved by hydrogen bonding, adhesion and/or static electricity. In an embodiment, the protective paper or protective film may be adhered to one side of the first or second glass substrate. After unpacking, the paper or film can be peeled off from the glass substrate.

Embodiments described herein can be further illustrated by the following non-limiting examples.

Instance

In all of the examples discussed below, glass sheet samples were prepared using an Eagle XG® LCD glass substrate manufactured by Corning Incorporated, Corning, New York, U.S.A., using an overflow melt down process.

Example 1

Four polyethylene films were prepared and the four polyethylene films were extruded using an extruder (Wayne "Yellow Jacket" wire with 1.5" screw elements) and a 6" film mold. The film composition was mainly used with 2.3 melt flow. Index low melt flow polyethylene resin (Dow Chemical LDPE 621). The fatty alcohol masterbatch is blended with a high melt flow polyethylene resin (Dow Chemical LDPE 722) having a 8.0 melt flow index. Melt flow polyethylene resin Mix to formulate the polymer film composition. Two fatty alcohols were used in the polyethylene film formulation. Octadecanol (99.5%) from Aldrich Chemical and octadiol (NACOL® 22-98) from Sasol Company.

The four polymer films prepared have the following formulation:

Membrane #1 contains 2000 ppm of stearyl alcohol

Membrane #2 contains 3000 ppm of stearyl alcohol

Membrane #3 contains 2000 ppm of epoxide

Membrane #4 contains 3000 ppm of diol

The amount of fatty alcohol on the surface of the membrane was determined by gas chromatography/mass spectrometry (GC/MS). The membrane was washed with methanol for 15 minutes, and the fatty alcohol extracted using methanol was quantified by GC/MS analysis. Table 1 contains the results of the analysis, which shows that the extracted solution contains fatty alcohol from the polymer film.

The amount of fatty alcohol transferred from the polymer film to the surface of the glass substrate was also measured. The fatty alcohol is transferred from the film to the glass surface by laminating the sides of the cleaned Eagle XG® (5" x 5") glass sheet with the prepared polymer film. The laminated glass sheets were aged at 60 ° C and thermally formulated at 2 kg weight for 2 days to simulate glass encapsulation conditions. After the laminated glass sheets were thermally blended, the sheets were stored at room temperature for 10 days, followed by surface chemical analysis. The polymer film was then removed from the glass sheet and the glass sheet was washed with methanol for 15 minutes. The fatty alcohol extracted using methanol was quantified using GC/MS analysis. Table 1 contains the results of GC/MS analysis showing the amount of fatty alcohol transferred from the polymer film to the glass surface.

Table 1. Low Density Polyethylene Membranes with Fatty Alcohol Additives: Number of Fatty Alcohols on the Surface of the Film and Transferred to the Glass Surface

To determine if the amount of fatty alcohol present on the glass surface is sufficient to charge The glass surface was divided and the equivalents were compared to an octadecyl alcohol known to provide adequate protection of the glass sheet. In the preparation control, octadecyl alcohol was vapor deposited on bare Eagle XG® glass sheets at 90 ° C for 10 seconds. The glass sheet of vapor-deposited stearyl alcohol was washed to extract fatty alcohol, and the extracted alcohol was quantified using GC/MS analysis. The amount of fatty alcohol present on the surface of the vapor deposited stearyl alcohol glass was determined to be 151 Ng/cm 2 .

It was found that the polymer film in samples 1 to 4 was transferred to the glass surface. The amount of stearyl alcohol and behenyl alcohol is equivalent to the amount of octadecyl alcohol vapor deposited on the glass surface at 90 ° C for 10 seconds, and thus the octadecyl alcohol transferred from the polymer film should be sufficient for subsequent glass disposal. And/or protect the glass surface during processing.

Example 2

Solid stearyl alcohol (Sigma Aldrich, Cat. No. 74723, 99% purity) was heated to a temperature of 90 ° C in a Petri dish where the octadecyl alcohol melted to form the entire bottom surface of the culture dish. Liquid, and also produces vapor in the air immediately above the Petri dish. The release sheet (WR139 from Thilmany, WI, USA) was then disposed approximately 4 cm above the surface of the alcohol melt from the culture dish where the sheets were maintained for 10 seconds, 30 seconds, 1 minute, and 5 minutes, respectively. And then removed. The temperature of the alcohol is measured at the surface of the melt.

Place naked Eagle XG® with uncoated WR139 at 90°C 10 seconds by octadecyl-coated WR139, 90 ° C for 30 seconds, octadecyl-coated WR139, 90 ° C for 1 minute, octadecyl-coated WR139, 90 ° C for 5 minutes, 18 Alcohol coated WR139 was contacted with erucylamine coated cellophane (CWR239 supplied by Thilmany, WI, USA). The paper was contacted with bare Eagle XG® glass for one day (24 hours) under simulated storage conditions using 4.77 kg of steel. The paper was then removed and the coated glass was subjected to a scratch test.

Scratch test method

Scratch was performed by contacting a 380 g stainless steel rod wrapped with uncoated WR139 paper against the surface of the glass sheet sample to be tested. The stainless steel rod is then moved back and forth relative to the surface of the glass sheet at a speed of 100 mm/s (no force perpendicular to the surface of the glass other than the force applied to the glass surface), 10 times (or 5 times backwards and 5 times forward) . The glass sheet samples were then cleaned using a 4% Semiclean KG solution (Yokohama Oils and Fats Industry Co., Ltd., Japan). The optical defect detection system obtained from Accu_Fab Systems, U.S.A. was used to measure the glass sheet sample for the defect number PC1, and then the glass surface was brought into contact with the paper and subjected to a scratch test. The glass sheet samples were also measured for the number of defects PC2 using an optical defect detection system after contacting the glass surface with the paper and performing a scratch test. An uncoated glass sheet sample was used as a control. In addition, a glass sheet sample protected with a plastic film (Visqueen®) was used as another control. The Visqueen® film was peeled from the glass and the glass was subjected to a scratch as described above, the glass was washed and the number of defects was determined.

Figure 6 graphically depicts the defect number test results. For bare glass Glass, contact with uncoated WR139 glass, contact with octadecyl-coated WR139 for 10 seconds at 90 °C and octadecyl-coated WR139 at 90 °C for 30 seconds The number of significant defects has increased. An octadecyl-coated WR139, octadecyl-coated WR139, erucinate-coated cellophane (CWR239 supplied by Thilmany, WI, USA) at 90 °C for 1 minute via octadecyl-coated WR139 at 90 °C for 5 minutes. The number of defects in Visqueen® showed a small change in the number of defects before and after the scratch test. In addition, the octadecyl-coated WR139 at 90 °C for 1 minute and the octadecyl-coated WR139 for 5 minutes at 90 °C provided comparable protection levels to the Visqueen® control.

Example 3

Solid stearyl alcohol (Sigma Aldrich, Cat. No. 74,723, 99% purity) was heated in a glass petri dish, where the octadecyl alcohol melted to form a liquid covering the entire bottom surface of the Petri dish, and also in close proximity to Petri Vapor is generated in the air above the dish. The release sheet (WR139 from Thilmany, WI, USA) was then disposed approximately 4 cm above the surface of the alcohol melt from the petri dish where it was maintained at 90 ° C for 1 minute and at 90 ° C for 5 minutes at It was maintained at 100 ° C for 1 minute, at 100 ° C for 5 minutes, and then removed. Further, a glass sheet sample having a clean surface on both sides was placed at a distance of about 1 cm from the surface of the melt of the alcohol above the Petri dish, where the glass sheet sample was maintained at 90 ° C for 10 seconds. The temperature of the alcohol is measured at the surface of the melt.

Place coated Eagle XG® with uncoated WR139, temperate coated WR139 at 90 °C for 1 minute, 90 °C for 5 minutes, octadecyl coated WR139, 100 °C for 1 Minutes by octadecyl alcohol coated WR139, 100 ° C for 5 minutes, octadecyl alcohol coated WR139 and mustard The decylamine coated cellophane (CWR239 supplied by Thilmany, WI, U.S.A.) was contacted. The paper was contacted with bare Eagle XG® glass for one day (24 hours) under simulated storage conditions using 4.77 kg of steel. The paper was then removed and the coated glass was subjected to a scratch test.

As in Example 2, the glass sheet sample was subjected to scratching and washing. The glass sheet sample was measured for the number of defects before the glass surface was brought into contact with the paper and after the glass surface was brought into contact with the paper. A coated glass sheet sample that was not in contact with any paper was used as a control. A coated glass sheet sample protected with a plastic film (Visqueen®) was used as another control. The Visqueen® film was peeled from the glass and the glass was subjected to a scratch as described above, the glass was washed and the number of defects was determined.

Figure 7 graphically depicts the defect number test results. For and not A significant increase in the number of defects was observed with the glass coated with WR139. WR139, 100 without octadecyl alcohol coated with octadecyl alcohol, WR139 coated with octadecyl alcohol for 5 minutes at 90 °C for 90 minutes at 90 °C, wrought with octadecyl alcohol for 1 minute at 100 °C for 1 minute. The number of defects of octadecyl-coated WR139, erucic acid-coated cellophane, and Visqueen®-coated coated glass at °C for 5 minutes showed changes in the number of extremely small defects before and after the scratch test. In addition, the octadecyl-coated WR139 provided a level of protection comparable to that of the control, which showed little loss of scratch protection.

Example 4

The washability of Eagle XG® glass was determined by transferring the fatty alcohol from WR139 to the surface of the glass substrate. Solid stearyl alcohol (Sigma Aldrich, catalog number 74723, 99% purity) was heated to 90 in a glass petri dish At a temperature of °C, the octadecyl alcohol melts to form a liquid covering the entire bottom surface of the culture dish, and also generates vapor in the air immediately above the Petri dish. The release sheet (WR139 from Thilmany, WI, USA) was then disposed approximately 4 cm above the surface of the alcohol melt from the culture dish where the sheets were maintained for 10 seconds, 30 seconds, 1 minute, and 5 minutes, respectively. And then removed. The temperature of the alcohol is measured at the surface of the melt.

Place naked Eagle XG® glass samples (5" x 5") with uncoated WR139, tempered with octadecyl alcohol for 10 seconds at 90 °C, hr139 at 90 °C for 30 seconds, wrought with octadecyl alcohol for 1 minute, wrought with octadecyl alcohol at WR139 and 90 °C The octadecyl-coated WR139 contact was continued for 5 minutes. The paper was brought into contact with bare Eagle XG® glass and pressed with a 4.77 kg steel block using a horizontal stacking method for one day (24 hours). The paper was then removed and the glass sheet was washed with a 4% Semiclean KG solution. The glass sheet sample was then exposed to chloroform and the glass sheet sample was dried to expose the presence of stearyl alcohol. The amount of stearyl alcohol (after washing) present on the glass surface was quantified using GC/MS analysis. Chloroform was used as a control group. The amount of octadecyl alcohol was also measured on a glass sheet sample that was not in contact with any paper and was not washed with a 4% Semiclean KG solution, and a glass sheet that was not in contact with any paper but was washed with 4% Semiclean KG solution was used. The sample served as a control. The results of the GC/MS analysis are shown in Table 3. These results show that the octadecyl alcohol transferred to the glass surface is easily washed from the glass surface, leaving the octadecyl alcohol content below the detection value.

Table 3: Washability results for naked Eagle XG®.

Example 5

The amount of stearyl alcohol transferred from octadecyl-coated WR139 to bare Eagle XG® glass was determined. Solid stearyl alcohol (Sigma Aldrich, Cat. No. 74723, 99% purity) was heated to a temperature of 90 ° C in a glass petri dish where the octadecyl alcohol melted to form a liquid covering the entire bottom surface of the Petri dish, and Vapor is generated in the air immediately above the Petri dish. The release sheet (WR139 from Thilmany, WI, USA) was then disposed approximately 4 cm above the surface of the alcohol melt from the culture dish where the paper was maintained for a period of 30 seconds, 1 minute, and 5 minutes, respectively, and then moved except. The temperature of the alcohol is measured at the surface of the melt.

Place bare Eagle XG® glass sample (5" x 5") with uncoated WR139, octadecyl coated WR139 at 90 °C for 30 seconds, and octadecyl alcohol for 1 minute at 90 °C WR139 was contacted with octadecyl-coated WR139 for 5 minutes at 90 °C. The paper was brought into contact with bare Eagle XG® glass and pressed with a 4.77 kg steel block using a horizontal stacking method for one day (24 hours). The paper was then removed and the glass sheet was subsequently washed with chloroform. Use GC/MS analysis for use The amount of octadecyl alcohol extracted by chloroform was quantified. Table 4 contains the results of GC/MS analysis showing the amount of stearyl alcohol transferred from the coated paper to the glass surface.

Table 4: Number of stearyl alcohol transferred from coated WR139 to the surface of Eagle XG® glass.

Example 6

The amount of adhesion reduction of octadecyl-coated EXG® and octadecyl-coated EXG® after contact with WR139 was measured. The glass samples were coated using vapor deposition at 90 ° C for 10 seconds. The coated glass samples were contacted with WR139 for one hour (similar to no contact) and lasted for 17 hours. The surface of the coated glass sheet sample was then measured by AFM for surface configuration and adhesion. The measuring end of the AFM contacts the surface of the glass sample and measures the retractive force and the number of times the retractive force is observed.

Figure 8 shows, on the right side, a surface force image captured by AFM at 2 micron x 2 of a glass sheet sample made of Eagle XG® with octadecyl alcohol deposited at 90 ° C for 10 seconds. Micron-scale surface. Using uncoated WR139 paper to contact the glass sheet sample for one hour, Contact with octadecyl-coated EXG® in untouched paper. In this image, the shallower areas are those with lower or no octadecyl alcohol coating, and the deeper areas have a relatively higher amount of octadecyl alcohol coating, and the deepest area is basically eighteen Alcohol because the surface adhesion as measured by AFM in such areas is substantially less than the surface adhesion of the bare glass sheet surface that is not exposed to stearyl alcohol vapor. The left side histogram of Figure 8 illustrates the distribution of the force measurements of the surface force image. The histograms show that compared to bare glass, the equivalent end requires less force to retract the AFM measurement end when exposed to the octadecyl-coated EXG®.

Figure 9 shows the surface force image captured by AFM on the right side. The AFM was placed on a 2 micron by 2 micron scale surface of a glass sheet sample made of Eagle XG® with octadecyl alcohol deposited at 90 ° C for 10 seconds. The glass sheet samples were contacted with WR139 paper for seventeen hours. In this image, the shallower areas are those with lower or no octadecyl alcohol coating, and the deeper areas have a relatively higher amount of octadecyl alcohol coating, and the deepest area is basically eighteen Alcohol because the surface adhesion as measured by AFM in such areas is substantially less than the surface adhesion of the bare glass sheet surface that is not exposed to stearyl alcohol vapor. A shallower area than the image of the force image captured in Figure 8 can be seen. Fig. 9 further illustrates a histogram on the left side, which shows the distribution of the adhesion force measurements of the surface force image. Similar to Figure 8, the histograms show that compared to bare glass, the equivalent end requires less force to retract the AFM measurement end when exposed to the octadecyl-coated EXG®.

Example 7

For EXG® glass samples exposed to the environment, freshly washed EXG® glass samples and octadecyl alcohol coated with octadecyl alcohol at 90 ° C for 1 minute The EXG® glass samples transferred to the surface of the WR139 paper were compared for adhesion strength measurements. Solid stearyl alcohol (Sigma Aldrich, Cat. No. 74723, 99% purity) was heated to a temperature of 90 ° C in a glass petri dish where the octadecyl alcohol melted to form a liquid covering the entire bottom surface of the Petri dish, and Vapor is generated in the air immediately above the Petri dish. A sheet of paper (WR139 from Thilmany, WI, U.S.A.) was then placed over the Petri dish at a distance of about 4 cm from the surface of the melt of the alcohol where the sheet was held for a period of 1 minute and subsequently removed. The temperature of the alcohol is measured at the surface of the melt.

A bare Eagle XG® glass sample was placed in contact with octadecyl-coated WR139 and pressed for 4. 1 kg with a 4.77 kg steel block. The paper is then removed and the glass sample is measured as is. Adhesion strength measurements were performed on several octadecyl spots on the glass samples after contact with the coated WR139 paper. Adhesion measurements were also performed on uncoated glass samples exposed to ambient air and freshly coated uncoated glass samples. Figure 10 illustrates a histogram of the distribution of adhesion strength measurements for a glass sheet sample. This histogram shows that the equivalent end requires less force to retract the AFM measurement end when exposed to octadecyl-coated EXG® than glass exposed to ambient air or freshly washed glass.

Example 8

Solid stearyl alcohol (Sigma Aldrich, Cat. No. 74723, 99% purity) was heated to a temperature of 90 ° C in a glass petri dish where the octadecyl alcohol melted to form a liquid covering the entire bottom surface of the Petri dish, and Vapor is generated in the air immediately above the Petri dish. To prepare the octadecyl alcohol coated paper, a paper sheet (WR139 from Thilmany, WI, U.S.A.) was then placed over the culture dish at a distance of about 4 cm from the surface of the melt of the alcohol where it was made The sheets were held for a period of 1 minute and then removed. The temperature of the alcohol is measured at the surface of the melt. A bare Eagle XG® glass sample was placed in contact with octadecyl-coated WR139 and pressed for 4. 1 kg with a 4.77 kg steel block. The paper is then removed.

For the preparation of octadecyl alcohol coated glass, both sides are cleaned A bare Eagle XG® glass sample of the surface was placed over the Petri dish at a distance of about 1 cm from the surface of the melt of the alcohol where the glass sample was maintained for a period of 10 seconds and the glass sample was subsequently removed.

Figures 11 and 12 show the eighteenth at 90 ° C for 10 seconds The difference in coating morphology between direct deposition of alcohol onto EXG® (Fig. 11) and direct deposition of stearyl alcohol onto WR139 at 90 °C for 1 minute followed by transfer to EXG® (Fig. 12). Although both cases provide good scratch protection, Figures 11 and 12 illustrate very different coating patterns.

Figures 11 and 12 illustrate 10 by the glass sheet sample Surface roughness of AFM capture on a micron x 10 micron scale surface. The horizontal axis represents the distance from the edge of the measured area to the edge; and the vertical axis shows the measured surface height relative to the reference plane. Figure 11 shows that direct vapor deposition of stearyl alcohol on the glass results in an uplift of about 18 nm high octadecyl alcohol. Figure 12 illustrates that the transfer of octadecyl alcohol from WR139 paper to the glass surface resulted in an octadecyl alcohol uplift of about 1 nm. Thus, if octadecyl alcohol is transferred to the glass surface using WR139 paper, the coating appears to be more uniform and thinner than direct deposition while still providing good scratch protection.

The subject matter described in this article is about protecting the glass substrate. law. The method may comprise the step of contacting a protective film or a protective paper with at least one surface of a glass substrate, wherein the protective film or protective paper comprises a slip agent A composition comprising at least one fatty alcohol having the formula R-OH, wherein R is a saturated or unsaturated, linear or branched aliphatic chain having from 12 to 30 carbon atoms. In the aspects described herein, the methods may further comprise transferring a portion of the slip agent composition from the protective film or protective paper to the surface of the glass substrate and removing the protective or protective paper from the surface of the glass substrate. A certain amount of the slip agent composition is retained on the surface of the glass substrate.

The subject matter described herein also relates to temporary protective glass substrates. The method. The method may comprise the step of contacting a protective film or protective paper having a slip agent composition with at least one surface of a glass substrate, the slip agent composition comprising at least one fatty alcohol having the formula R-OH, wherein R a saturated or unsaturated, linear or branched aliphatic chain containing from 12 to 30 carbon atoms; a portion of the slip agent composition is transferred from the protective film or protective paper to the surface of the glass substrate; and the protective film or protective paper is applied The surface of the glass substrate is removed such that a certain amount of the slip agent composition remains on the surface of the glass substrate.

The subject matter described herein is also related to composite glass packages. The The composite glass package may comprise a glass substrate and a protective paper or protective film adhered to the surface of the glass substrate, wherein the protective paper or protective film comprises a slip agent composition comprising at least one of the formula R a fatty alcohol of -OH wherein R is a saturated or unsaturated, linear or branched aliphatic chain having from 12 to 30 carbon atoms.

In the aspects described herein, the slip agent composition can comprise about 75 Up to 100% by weight of at least one fatty alcohol. In one aspect of the invention, R is a saturated linear aliphatic chain containing from 12 to 26 carbon atoms. In the aspect described herein, the at least one fatty alcohol is lauryl alcohol, tridecyl alcohol, tetradecane Alcohol, pentadecyl alcohol, cetyl alcohol, palmitol alcohol, heptadecyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, linoleyl alcohol, eicosyl alcohol, behenyl alcohol, erucic acid Sterol or a combination thereof. In the aspect described herein, the at least one fatty alcohol is stearyl alcohol. In the aspects described herein, the slip agent composition can comprise from about 75 to 100% by weight of the at least one fatty alcohol, and R can be a saturated linear aliphatic chain containing from 12 to 26 carbon atoms. In the aspect described herein, the slip agent composition comprises from about 75 to 100% by weight of at least one fatty alcohol, and the at least one fatty alcohol is lauryl alcohol, tridecyl alcohol, tetradecanol, fifteen Alkanol, cetyl alcohol, palmitolol, heptadecyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, linoleyl alcohol, eicosyl alcohol, behenyl alcohol, erucic acid sterol or combination. In the aspect described herein, the slip agent composition comprises from about 75 to 100% by weight of at least one fatty alcohol, and the at least one fatty alcohol is stearyl alcohol.

In the aspect described herein, the protective film or protective paper includes at least A slip agent composition of about 200 ng/cm 2 . In the aspect described herein, the protective film or protective paper comprises cellophane, kraft paper, parchment paper, recycled paper, cellulose paper, polyolefin, low density polyethylene, polyethylene film, ethylene-acrylic acid (EAA) copolymer, ethylene. - Vinyl acetate (EVA) copolymer, nylon polymer, polyethylene terephthalate polymer, polyvinyl chloride polymer, polypropylene or a combination thereof.

In the aspects described herein, the amount of the slip agent composition remaining on the surface of the glass substrate is sufficient to cause the slip agent composition to adhere to the surface of the glass substrate and act as a protective layer, and will be washed from the glass substrate. The surface is removed. In the aspects described herein, the amount of the slip agent composition remaining on the surface of the glass substrate is from about 10 ng/cm<2> to about 1600 ng/cm<2>.

In the aspects described herein, the methods may further comprise washing The glass substrate is removed to remove the slip agent composition such that less than 8 ng/cm 2 of the slip agent composition remains on the surface of the glass substrate. In the aspects described herein, the glass has a percentage change in the number of defects of from about 0.5% to about 50% when the slip agent composition is removed. In the aspects described herein, the methods can further comprise washing the glass substrate to remove the slip agent composition such that the glass has a defect of from about 0.5% to about 50% when the slip agent composition is removed. The percentage change in number.

Those skilled in the art will be readily apparent, without departing from the claimed Various modifications and changes may be made to the embodiments described herein. Therefore, it is intended that the present invention cover the modifications and variations of the various embodiments described herein.

Claims (20)

A method of protecting a glass substrate, the method comprising the steps of: contacting a protective film or protective paper with at least one surface of a glass substrate; wherein the protective film or protective paper comprises a slip agent composition, the slip agent combination The article comprises at least one fatty alcohol having the formula R-OH wherein R is a saturated or unsaturated, linear or branched aliphatic chain having from 12 to 30 carbon atoms. The method of claim 1, wherein the slip agent composition comprises from about 75 to 100% by weight of the at least one fatty alcohol. The method of claim 1, wherein R is a saturated linear aliphatic chain having from 12 to 26 carbon atoms. The method of claim 1, wherein the at least one fatty alcohol is lauryl alcohol, tridecyl alcohol, myristyl alcohol, pentadecyl alcohol, cetyl alcohol, palmitol alcohol, heptadecyl alcohol, stearic acid Alcohol, isostearyl alcohol, oleyl alcohol, linoleyl alcohol, eicosyl alcohol, behenyl alcohol, erucic acid sterol or a combination thereof. The method of claim 1, wherein the at least one fatty alcohol is stearyl alcohol. The method of claim 1 wherein the protective film or protective paper comprises at least about 200 ng/cm 2 of the slip agent composition. The method of claim 1, wherein the protective film or protective paper comprises cellophane, kraft paper, parchment paper, recycled paper, cellulose paper, polyolefin, low density polyethylene, polyethylene film, ethylene-acrylic acid (EAA) copolymer. An ethylene-vinyl acetate (EVA) copolymer, a nylon polymer, a polyethylene terephthalate polymer, a polyvinyl chloride polymer, polypropylene, or a combination thereof. A method for temporarily protecting a glass substrate, the method comprising the steps of: contacting a protective film or a protective paper having a slip agent composition with at least one surface of a glass substrate, the slip agent composition comprising at least one a fatty alcohol of R-OH, wherein R is a saturated or unsaturated, linear or branched aliphatic chain having from 12 to 30 carbon atoms; a portion of the slip agent composition is transferred from the protective film or protective paper to the The surface of the glass substrate; and the protective film or protective paper is removed from the surface of the glass substrate such that a quantity of the slip agent composition remains on the surface of the glass substrate. The method of claim 8, wherein the slip agent composition comprises from about 75 to 100% by weight of the at least one fatty alcohol. The method of claim 8 wherein R is a saturated linear aliphatic chain having from 12 to 26 carbon atoms. The method of claim 8, wherein the at least one fatty alcohol is lauryl alcohol, Tridecyl alcohol, tetradecanol, pentadecyl alcohol, cetyl alcohol, palmitol alcohol, heptadecyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, linoleyl alcohol, eicosyl alcohol, Dodecyl alcohol or erucic acid sterol or a combination thereof. The method of claim 8, wherein the at least one fatty alcohol is stearyl alcohol. The method of claim 8, wherein the amount of the slip agent composition remaining on the surface of the glass substrate is sufficient to adhere the slip agent composition to the surface of the glass substrate and as a protective layer, And will be removed from the surface of the glass substrate by washing. The method of claim 8, wherein the amount of the slip agent composition remaining on the surface of the glass substrate is from about 10 ng/cm 2 to about 1600 ng/cm 2 . The method of claim 8, further comprising washing the glass substrate to remove the slip agent composition such that less than 8 ng/cm 2 of the slip agent composition remains on the washed glass substrate On the surface. The method of claim 8, wherein the glass has a percentage change in the number of defects of from about 0.5% to about 50% when the slip agent composition is removed. A composite glass package comprising: a glass substrate; a protective paper or protective film adhered to one surface of the glass substrate; wherein the protective paper or protective film comprises a slip agent composition comprising at least one having the formula R-OH A fatty alcohol wherein R is a saturated or unsaturated, linear or branched aliphatic chain having from 12 to 30 carbon atoms. The composite glass package of claim 17, wherein the protective film or protective paper comprises the slip agent composition of at least about 200 ng/cm 2 . The composite glass package of claim 17, wherein the at least one fatty alcohol is lauryl alcohol, tridecyl alcohol, myristyl alcohol, pentadecyl alcohol, cetyl alcohol, palmitol alcohol, heptadecyl alcohol, Stearyl alcohol, isostearyl alcohol, oleyl alcohol, linoleyl alcohol, eicosyl alcohol, behenyl alcohol, erucic acid sterol or a combination thereof. The composite glass package of claim 17, wherein the at least one fatty alcohol is stearyl alcohol.